Upper Looper, Necchi #310616 discountable and the 45-degree diagonal makes

and the 45-degree diagonal makes half-square triangle blocks easier to square accurately

190 decorative stitches

Janome's Memory Craft 500ELE can embroider between 400 and 860 stitches per minute

A few other buttons include a reverse stitch

ZigZagger Low Shank Foot fits almost any low shank machine that uses the power of the arm and needle clamp

Upper Looper, Necchi #310616 discountable and the 45-degree diagonal makesGuaranteed to fit Consew Serger Machine Models: ML4, ML94 Guaranteed to fit National Serger Machine Models: N10, N20 Guaranteed to fit Necchi Serger Machine Models: NL4 Guaranteed to fit Supreme Serger Machine Models: ML4, ML94